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AIR POLLUTION CONTROL REGULATIONS 

 SECTION 1 - DEFINITIONS

1.0 In these Regulations, unless the context otherwise requires: 

1.2"Affected Facility" means, with reference to a stationary source, 

any apparatus to which a standard is applicable. 

1.4"Air Contaminant" means, any substance discharged into the 

atmosphere except water vapor or water droplets. 

1.7"Air Pollution Control Committee" means, three (3) members selected 

from the District Board of Health of Clark County to perform the 

functions set forth in these Regulations. 

1.12"Area Source" means, a collection of minor sources each emitting 

less than 22.7 metric tons (25 tons) per year of any pollutant for which 

there is a standard. 

1.13"Atmosphere" means, the portion of air which envelops the earth 

that is not contained in any enclosed building or structure. 

1.19"Board" means, the District Board of Health of Clark County. 

1.31"Dust" means, minute solid particles released into the atmosphere 

by natural forces or by mechanical or chemical processes. 

1.34"Existing Facility" means, any single source of contaminant on 
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which construction or modification was begun prior to August 25, 1971. 

1.35"Existing Gasoline Station" means, a place capable of receiving, 

storing, and dispensing one or more grades of gasoline for use in motor 

vehicles and for which construction commenced prior to November 1, 

1977. 

1.36"Fixed Capital Cost" means, the capital needed to provide all the 

depreciable components. 

1.42"Fumes" means, minute solid particles generated by the 

condensation of vapors from solid matter after volatilization from the 

molten state, or may be generated by sublimation, distillation, 

calcination, or chemical reaction, when these processes create 

airborne particles. 

1.46"Health District" means, the Clark County Health District. 

1.47"Hearing Board" means, seven (7) members appointed by the Board 

of Health to perform the function set forth in the Nevada Revised 

Statutes and these Regulations. 

l.50"Integrated Sampling" means, sampling for an average 

concentration during an arbitrary time period. It generally involves 

collection of the sample in the field followed by analysis of the sample 

in the laboratory. 

1.56"Minor Source" means, a source of air contaminants in which the 

potential to emit for each and every contaminant is less than the 

significant emission rate. 

1.57"Mist" means, liquid particulates or droplets, about the size of 

raindrops, such as fog, that are formed by condensation or vapor, or 

atomization of a liquid by mechanical spraying. 

1.63"New Gasoline Station" means, a place capable of receiving, 

storing and dispensing one or more grades of gasoline for use in motor 

vehicles and for which construction commenced on or after November 1, 

1977. 

1.64"New Source" means, any stationary source of air contaminant on 

which construction or reconstruction has begun after August 

25, 1971. 
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1.66 "NIC" means, Nevada Industrial Commission. 

1.78"Point Source" means, any source that emits in excess of 22.7 

metric tons (25 tons) per year of any air contaminant. 

1.87"Shutdown" means, the cessation of operation of any affected 

facility for any purpose. 

1.88"Significant" means, in reference to a net emissions increase or 

the potential of a source to emit any of the following pollutants, a 

rate of emissions that would equal or exceed any of the following rates: 

Pollutant and Emissions Rate 

 Carbon monoxide - 25 tons per year (TPY) 

Nitrogen oxides - 40 TPY 

Sulfur dioxide - 40 TPY 

Particulate matter - 5 TPY 

Volatile organic compounds - 40 TPY 

Lead - 0.2 TPY 

Asbestos - 0.007 TPY 

Beryllium - 0.0004 TPY 

Mercury - 0.1 TPY 

Vinyl chloride - 1 TPY 

Fluoride - 3 TPY 

Sulfuric acid mist - 7 TPY 

Hydrogen sulfide (H2S) - 10 TPY 

Total reduced sulfur (including H2S) - 10 TPY 

Reduced sulfur compounds (including H2S) - 10 TPY 

Total chloride - 10 TPY 

1.89"Significant Source of Total Chlorides" means, a process or 

process equipment 

a) which emits more than 10 pounds per hour from a stack or stacks, 

or 

b)which has fugitive emissions of more than 25 pounds per hour from 

a single building or other distinct fugitive source. 

More than one significant source of total chloride may exist under the 

same management, control or ownership. 
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1.91"Single Source" means, all similar process operations located at 

a single contiguous property which can technically be replaced by a 

single process that performs the same function. 

1.93"Smoke" means, the product of incomplete combustion consisting 

chiefly of particles of unburned carbon. 

1.94"Source of Air Contaminant" means, anything which emits any air 

contaminant. 

1.95"Special Mobile Equipment" means, every vehicle not designed or 

used primarily for the transportation of persons or property and only 

incidentally operated or moved upon a paved roadway. Special mobile 

equipment may include but is not limited to graders, scrapers, 

bulldozers and other construction equipment. 

1.97"Standard Commercial Equipment" means, equipment manufactured in 

quantity for the purpose intended and completely specified as to the 

size, type and ratings in catalogs, and other printed literature 

readily available locally to officials within Clark County. 

1.98"Standard Conditions" means, a temperature of 20o Celcius (68o F) 

and a pressure of 760 mm of mercury (29.92 inches of mercury). 

1.99"Start Up" means, the setting in operation of an affected facility 

for any purpose. 

1.100"Stationary Source" means, any building, structure, facility, or 

installation which emits or may emit any air contaminant subject to 

regulations contained herein. A stationary source is composed of one 

or more emission units, is located on one or more contiguous or adjacent 

properties, and is under control of the same person (or persons under 

common control). Examples of emission units are: 

Stacks; 

Vents; 

Process areas releasing air contaminants; 

 Unpaved haul roads serving a gravel processing operation; 

 Air pollution control equipment; 

 Evaporation towers; 

 Storage tanks; and 

 Stationary engines. 

 Emission units do not include motor vehicle emissions. 

1.101"Stop Order" means, a written notice by the Control Officer served 

on a person or persons engaged in the doing or causing the construction, 
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installation or alteration, or work to be stopped. 

1.105"Uncombined Water" means, a visible mist of condensed water 

vapor. 

1.108"Vapor Disposal System" means, a device or combination of devices 

into which vapors are passed before being vented into the atmosphere.